/*
 TwoWire.h - TWI/I2C library for Arduino & Wiring
 Copyright (c) 2006 Nicholas Zambetti.  All right reserved.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef TwoWire_h
#define TwoWire_h

#include <inttypes.h>

#define BUFFER_LENGTH 32

class TwoWire {
private:
  static uint8_t* rxBuffer;
  static uint8_t rxBufferIndex;
  static uint8_t rxBufferLength;

  static uint8_t txAddress;
  static uint8_t* txBuffer;
  static uint8_t txBufferIndex;
  static uint8_t txBufferLength;

  static uint8_t transmitting;
  static void (*user_onRequest)(void);
  static void (*user_onReceive)(int);
  static void onRequestService(void);
  static void onReceiveService(uint8_t*, int);
public:
  TwoWire();
  void begin();
  void begin(uint8_t);
  void begin(int);
  void beginTransmission(uint8_t);
  void beginTransmission(int);
  uint8_t endTransmission(void);
  uint8_t requestFrom(uint8_t, uint8_t);
  uint8_t requestFrom(int, int);
  void send(uint8_t);
  void send(uint8_t*, uint8_t);
  void send(int);
  void send(char*);
  uint8_t available(void);
  uint8_t receive(void);
  void onReceive(void(*)(int));
  void onRequest(void(*)(void));
};

extern TwoWire Wire;

#endif

